Sort = "created_utc" didnt sort results properly

[grejty]

My code looks like this:

gen = list(api.search_submissions(q="fire",
sort="created_utc",
order="desc",
subreddit=subreddit,
filter=['id'],
limit=None))

for pmaw_submission in gen:
praw_submission = reddit.submission(id=pmaw_submission['id'])
print(datetime.utcfromtimestamp(praw_submission.created_utc))

Returns the following: https://pastebin.com/Y91fYYDy

You can see the years are not in order, otherwise, it kinda looks ordered, if we talking days/time only

Any idea why is this happening / how to fix this? Thanks

[grejty]

Overall, the query is returning submission in different order everytime it's ran